On 05.05.22 17:47, Maxim Orlov wrote:
During work on 64-bit XID patch [1] we found handy to have initdb
options to set initial xid/mxid/mxoff values to arbitrary non default
values. It helps test different scenarios: related to wraparound,
pg_upgrade from 32-bit XID to 64-bit XID, etc.
We realize, this patch can be singled out as an independent patch from
the whole patchset in [1] and be useful irrespective of 64-bit XID in
cases of testing of wraparound and so on.
In particular, we employed this patch to test recent changes in logical
replication of subxacts [2] and found no problems in it near the point
of publisher wraparound.
Just for completeness, over in the other thread the feedback was that
this functionality is better put into pg_resetwal.
